Hello !!
I sent the quotation to clients, it looks fine in print preview but when I sent the quotation by mail, it looks very odd.
Company logo enlarged and located in the center of the page.
If you can share the screenshot and share the details of how have you inserted the company logo, we might be able to help.
From my experience wkhtmltopdf does sometimes things differently than my browser, especially with bootstrap styles. In one case I needed to replace col-md-x with col-xs-x. In another case the problem was the usage of display:flex which led to weird layouts in the pdf.
As I’m not a CSS pro I didn’t investigate deeper, but from my understanding it’s mainly due to different engines processing the styles (browser vs. wkhtmltopdf).